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Font::TTF::OldMort(3pm) User Contributed Perl Documentation Font::TTF::OldMort(3pm)

NAME

Font::TTF::OldMort - Glyph Metamorphosis table in a font

DESCRIPTION

INSTANCE VARIABLES

table version number (Fixed: currently 1.0)
list of metamorphosis chains, each of which has its own fields:
chain's default subfeature flags (UInt32)
list of feature entries, each of which has fields:
list of metamorphosis subtables, each of which has fields:
subtable type (0: rearrangement; 1: contextual substitution; 2: ligature; 4: non-contextual substitution; 5: insertion)
processing direction ('LR' or 'RL')
applies to text in which orientation ('VH', 'V', or 'H')
the subfeature flags controlling whether the table is used (UInt32)

Further fields depend on the type of subtable:

Rearrangement table:
array of lists of glyphs
array of arrays of hashes{'nextState', 'flags'}

Contextual substitution table:

array of lists of glyphs
array of array of hashes{'nextState', 'flags', 'actions'}, where "actions" is an array of two elements which are offsets to be added to [marked, current] glyph to get index into "mappings" (or "undef" if no mapping to be applied)
list of glyph codes mapped to through the state table mappings

Ligature table:

Non-contextual substitution table:

Insertion table:

METHODS

$t->read

Reads the table into memory

$t->out($fh)

Writes the table to a file either from memory or by copying

$t->print($fh)

Prints a human-readable representation of the table

BUGS

None known

AUTHOR

Jonathan Kew <http://scripts.sil.org/FontUtils>.

LICENSING

Copyright (c) 1998-2016, SIL International (http://www.sil.org)

This module is released under the terms of the Artistic License 2.0. For details, see the full text of the license in the file LICENSE.

2022-06-14 perl v5.34.0